Tagged Questions
0
votes
5answers
385 views
Collision detection logic
Edit 2
In the following picture sprite1 (the red square) is hitting the platform from the left, so:
sprite1_rightEdge>platformSprite leftEdge
would be true, so I can simply reposition ...
0
votes
1answer
47 views
Implementing Frame of reference for physics calculations
How would I alter physical calculations to account for frame of reference of a physical body?
Currently I have a world that is a collection of rigid body objects that act on each other. There is no ...
0
votes
1answer
88 views
Is there a “box2d without physics” lib (only for collision detection)?
Box2d Collision detection algorithms are probably the best ones out there. Unfortunately, they are bundled together with a realistic physics engine that I don't need.
Is there an open source project ...
4
votes
1answer
125 views
Automatically generate low detail collision meshes
I lately integrated Bullet Physics into my little game engine, but for now I only use basic shapes as spheres or boxes for collision checks. For more realistic physics I need collision meshes for all ...
2
votes
3answers
201 views
How should I calculate the new angle/direction of my ball hitting a wall? [duplicate]
I'm building a Pong game and I am stuck at how the ball should bounce when hitting a horizontal wall.
I tried a few methods but none seems to work.
So far I have an update method, which is called ...
0
votes
1answer
72 views
Gravity/collision problems: models jumping
I'm pretty new to Unity3D game engine and game development, so don't judge me strictly. I import a model of the rail track, add rigid body component (with mass 1 and use gravity flag) and box collider ...
10
votes
3answers
331 views
How to implement collision detection of portals?
For example, take this scenario (excuse my horrible drawing skills):
This is based on "Portal", where the stickman is going through the blue portal (which is linked to the red portal), but there is ...
1
vote
1answer
139 views
Understanding Box2d Restitution & Bouncing
I'm currently trying to implement basketball bouncing into my game using Box2d (jBox2d technically), but I'm a bit confused about restitution.
While trying to create the ball in the testbed first, ...
0
votes
2answers
65 views
Checking bounds of a quad
I want to know how would I tell if a quad touches another quad in my game built in Slick2D. I have a class that I named "Bounds" which has 4 "Point" objects which just store an X and a Y value and a ...
4
votes
1answer
148 views
Networked Physics - Interpolation Causes Physics Engine to Explode
A major issue I am encountering right now is that my physics engine (BEPU) and my network interpolation are conflicting with each other.
The player is a physics object, and so the physics engine ...
12
votes
3answers
593 views
Resolving a collision with forces
In my 2D physics engine, I can detect AABB vs AABB collisions, and resolve them by finding the shortest penetration vector and adding it to the AABB's position.
Doing this "pushes" the first AABB ...
1
vote
1answer
135 views
When and where should I calculate collision response with multiplayer physics?
I've troubles wrapping my head around multiplayer physics and collisions on the client side, so far I interpolate the state of my network entities ( position and velocity ) of the other clients based ...
0
votes
0answers
206 views
Unity3D: collider performances on mobile iOS devices
I'm experimenting with Unity3D and colliders. Unfortunately I still don't have Unity Pro version and I can't use the profiler.
Consider the following situation:
mobile devices (ios, iphone 3GS).
an ...
2
votes
1answer
163 views
RK4 integration and Continuous Collision Detection
I'm using this method to detect collision between two AABBs. The algorithm is simple, fast and works great. It uses the relative velocity between the two objects to calculate TOI. This works fine with ...
6
votes
1answer
163 views
Determining whether two fast moving objects should be submitted for a collision check
I have a basic 2D physics engine running. It's pretty much a particle engine, just uses basic shapes like AABBs and circles, so no rotation is possible. I have CCD implemented that can give accurate ...
